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(A) $Transition$ metals are known to be efficient catalysts because they possess variable oxidation states and the ability to form unstable intermedia

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Transition

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(A) $Transition$ metals are known to be efficient catalysts because they possess variable oxidation states and the ability to form unstable intermediate compounds with reactants. These intermediate compounds provide an alternative pathway with lower activation energy for the reaction,thereby increasing the rate of the reaction. Thus,$Transition$ metals are the most efficient catalysts.

List-$I$ Species	List-$II$ Electronic distribution
$A$. $Cr^{2+}$	$I$. $3d^8$
$B$. $Mn^{+}$	$II$. $3d^3 4s^1$
$C$. $Ni^{2+}$	$III$. $3d^4$
$D$. $V^{+}$	$IV$. $3d^5 4s^1$

Which of the following metals make the most efficient catalyst?

Similar Questions

In the $3d$ series of the $d$-block elements,which element has the maximum atomic size?

Match List-$I$ with List-$II$

List-$I$ Species List-$II$ Electronic distribution

$A$. $Cr^{2+}$ $I$. $3d^8$

$B$. $Mn^{+}$ $II$. $3d^3 4s^1$

$C$. $Ni^{2+}$ $III$. $3d^4$

$D$. $V^{+}$ $IV$. $3d^5 4s^1$

Choose the correct answer from the options given below:

Which of the following represents the correct order of density for the given $3d$ series elements?

$Zr$ $(Z=40)$ and $Hf$ $(Z=72)$ have similar atomic and ionic radii because of :

For what reason is the element $Th$ included in the $f$-block?

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